Corrosion mapping is an ultrasonic technique used for mapping (recording and visualization) of an area of wall thickness measurements.
Corrosion mapping can be performed with conventional ultrasonic probes where the positional information of the probe is detected and recorded by a camera and a sensor with infra-red LED. This technique is a simple but a highly efficient method to record and present the data and very flexible for example for complex geometries. The wall thickness readings are digitally stored and translated into an easily understandable visual presentation: a color coded image.
Corrosion mapping can also be performed with the use of Phased Array probes where the positional information of the probe is detected and recorded by an encoder in combination with a scanner frame. This technique is faster for the examination of large (flat) areas but not as flexible as conventional corrosion mapping.
Corrosion Mapping is used to measure degradation mechanisms such as corrosion, erosion, Hydrogen Induced Cracking (HIC) and High Temperature Hydrogen Attack (HTHA).
- Detection of corrosion and/or erosion
- Inspection at elevated temperatures varying from 50°C to over 250°C
- NII, Non-Intrusive Inspection
- Inspection of complex geometries
- Detection of Hydrogen Induced Cracks (HIC) and Stress Corrosion Cracking (SCC)
- Detection of High Temperature Hydrogen Attack (HTHA)